- added symmetrize() and antisymmetrize() functions

[ginac.git] / ginac / inifcns.h

diff --git a/ginac/inifcns.h b/ginac/inifcns.h
index 985b50ffe33cc45bb21ff43b4bea8df4538dfd09..6a7efbe610a24930690b1462eb42f02427585f9a 100644 (file)
--- a/ginac/inifcns.h
+++ b/ginac/inifcns.h
@@ -136,6 +136,30 @@ ex lsolve(const ex &eqns, const ex &symbols);
 /** Power of non-commutative basis. */
 ex ncpow(const ex & basis, unsigned exponent);
 
+/** Symmetrize expression over a set of objects (symbols, indices). */
+ex symmetrize(const ex & e, exvector::const_iterator first, exvector::const_iterator last);
+
+/** Symmetrize expression over a set of objects (symbols, indices). */
+inline ex symmetrize(const ex & e, const exvector & v)
+{
+       return symmetrize(e, v.begin(), v.end());
+}
+
+/** Symmetrize expression over a list of objects (symbols, indices). */
+ex symmetrize(const ex & e, const lst & l);
+
+/** Antisymmetrize expression over a set of objects (symbols, indices). */
+ex antisymmetrize(const ex & e, exvector::const_iterator first, exvector::const_iterator last);
+
+/** Antisymmetrize expression over a set of objects (symbols, indices). */
+inline ex antisymmetrize(const ex & e, const exvector & v)
+{
+       return antisymmetrize(e, v.begin(), v.end());
+}
+
+/** Antisymmetrize expression over a list of objects (symbols, indices). */
+ex antisymmetrize(const ex & e, const lst & l);
+
 inline bool is_order_function(const ex & e)
 {
        return is_ex_the_function(e, Order);